Low dust linear module

Patent metadata

Field	Value
Publication number	US-10935075-B2
Application number	US-201816166594-A
Country	US
Kind code	B2
Filing date	Oct 22, 2018
Priority date	Oct 22, 2018
Publication date	Mar 2, 2021
Grant date	Mar 2, 2021

Abstract

A low dust linear module includes a rail unit, a slide seat unit, a dustproof strip and two magnetic members. The two magnetic members are disposed at the two slide seat end portions of the slide seat, the first magnetic attraction gap is defined between the magnetic attraction area and a corresponding one of the magnetic members, and the second magnetic attraction gap is defined between the magnetic attraction area and the slide seat cover. When the dustproof strip passes through and are magnetically attracted by the magnetic members, a gap will appear between the magnetic members and the slide seat and the slide seat cover, so that the magnetic members and the dustproof strip are kept in a gap without friction, so as to avoid the generation of dust due to friction, so that the linear module can operate normally and maintain the standard of the working environment.

First claim

What is claimed is:

1. A low dust linear module comprising:
a rail unit having a displacement direction;
a slide seat assembly including a slide seat and a slide seat cover, wherein the slide seat is slidably disposed in the rail unit along the displacement direction, and has two slide seat end portions disposed along the displacement direction, the slide seat cover is disposed on the slide seat and includes two opposite slide-seat-cover ends arranged along the displacement direction; the low dust linear module is characterized in that:
a dustproof strip includes: two end portions fixed to the rail unit, and a magnetic attraction section disposed between the two end portions and inserted between the slide seat and the slide seat cover; and
at least one magnetic member is disposed on a side of the slide seat facing the dustproof strip, a portion of the magnetic attraction section to be magnetically attracted by the magnetic member is defined as a magnetic attraction area, a first magnetic attraction gap is defined between the magnetic attraction area and the magnetic member, and a second magnetic attraction gap is defined between the magnetic attraction area and one of the two opposite slide-seat-cover ends of the slide seat cover;
wherein a magnetic attraction force of the at least one magnetic member is between 2.3 and 5.6 kgf, a magnetic flux density Gauss is between 3900 and 4100, a magnetic surface of the at least one magnetic member has a rectangular shape, a length and a width of the magnetic surface are between 10 mm×10 mm and 12 mm×12 mm, and the first magnetic attraction gap is between 0.1 and 0.8 mm.

2. The low dust linear module as claimed in claim 1 , wherein the rail unit includes a rail and two side covers, the two side covers are disposed at two sides of the rail, and each include a longitudinal portion disposed at a lateral edge of the rail and a transverse portion connected to the longitudinal portion, and a space is defined between the two transverse portions for receiving the dustproof strip.

3. The low dust linear module as claimed in claim 2 , wherein each of the transverse portions is provided with a support groove, and a magnetic strip is disposed in each of the support grooves, a first one of the magnetic strips magnetically attracts one side of the magnetic attraction section of the dustproof strip, and a second one of the magnetic strips magnetically attracts another side of the magnetic attraction section of the dustproof strip.

4. The low dust linear module as claimed in claim 2 , wherein a top surface of the at least one magnetic member is lower than a top surface of the transverse portion of each of the side covers.

5. The low dust linear module as claimed in claim 1 , wherein the slide seat further includes an intermediate protrusion portion disposed between the two slide seat end portions, and two slide seat side walls formed on two sides of the intermediate protrusion portion, a slide seat groove is defined between the two slide seat side walls, the magnetic attraction section of the dustproof strip is inserted through the slide seat groove, and a part of the magnetic attraction section of the dustproof strip inserted in the intermediate protrusion portion protrudes upward.

6. The low dust linear module as claimed in claim 1 , wherein there are two said magnetic members which are respectively disposed at the two slide seat end portions of the slide seat.

7. A low dust linear module comprising:
a rail unit having a displacement direction;
a slide seat assembly including a slide seat and a slide seat cover, wherein the slide seat is slidably disposed in the rail unit along the displacement direction, and has two slide seat end portions disposed along the displacement direction, the slide seat cover is disposed on the slide seat and includes two opposite slide-seat-cover ends arranged along the displacement direction; the low dust linear module is characterized in that:
a dustproof strip includes: two end portions fixed to the rail unit, and a magnetic attraction section disposed between the two end portions and inserted between the slide seat and the slide seat cover; and
at least one magnetic member is disposed on a side of the slide seat facing the dustproof strip, a portion of the magnetic attraction section to be magnetically attracted by the magnetic member is defined as a magnetic attraction area, a first magnetic attraction gap is defined between the magnetic attraction area and the magnetic member, and a second magnetic attraction gap is defined between the magnetic attraction area and one of the two opposite slide-seat-cover ends of the slide seat cover;
wherein a magnetic attraction force of the at least one magnetic member is between 2.3 and 5.6 kgf, a magnetic flux density Gauss is between 3900 and 4100, a magnetic surface of the at least one magnetic member has a circular shape, a diameter of the magnetic surface is between 10 mm and 18 mm, and a thickness of the at least one magnetic member is 3 mm to 5 mm.

8. The low dust linear module as claimed in claim 7 , wherein the rail unit includes a rail and two side covers, the two side covers are disposed at two sides of the rail, and each include a longitudinal portion disposed at a lateral edge of the rail and a transverse portion connected to the longitudinal portion, and a space is defined between the two transverse portions for receiving the dustproof strip.

9. The low dust linear module as claimed in claim 8 , wherein each of the transverse portions is provided with a support groove, and a magnetic strip is disposed in each of the support grooves, a first one of the magnetic strips magnetically attracts one side of the magnetic attraction section of the dustproof strip, and a second one of the magnetic strips magnetically attracts another side of the magnetic attraction section of the dustproof strip.

10. The low dust linear module as claimed in claim 8 , wherein a top surface of the at least one magnetic member is lower than a top surface of the transverse portion of each of the side covers.

11. The low dust linear module as claimed in claim 7 , wherein the slide seat further includes an intermediate protrusion portion disposed between the two slide seat end portions, and two slide seat side walls formed on two sides of the intermediate protrusion portion, a slide seat groove is defined between the two slide seat side walls, the magnetic attraction section of the dustproof strip is inserted through the slide seat groove, and a part of the magnetic attraction section of the dustproof strip inserted in the intermediate protrusion portion protrudes upward.

12. The low dust linear module as claimed in claim 7 , wherein there are two said magnetic members which are respectively disposed at the two slide seat end portions of the slide seat.

Assignees

• Hiwin Tech Corp

Inventors

• Hung Ciao-Cun
• Tsai Meng-Lung
• Peng Tsung-Wen

Classifications

• F16C29/082 Primary

  fixed to the way · CPC title

• B23Q11/0825

  Relatively slidable coverings, e.g. telescopic · CPC title

• F16C29/02

  Sliding-contact bearings · CPC title

• F16C29/084 Primary

  fixed to the carriage or bearing body movable along the guide rail or track · CPC title

• B23Q1/58

  a single sliding pair · CPC title